Question

Incorrect statement among the following is:

• A. Pig iron contains about 4% carbon
• B. Aniline can be used as froth stabiliser in froth floatation process
• C. Brass is an alloy of copper and zinc
• D. Zirconium is refined by zone refining method

Answer 1

The correct option is D Zirconium is refined by zone refining method

• Iron obtained from blast furnace contains about 4% carbon. It is called pig iron.
• Aniline is used as froth stabiliser in froth floatation process
• Brass (Cu 60%, Zn 40%)
• Zirconium is refined by van Arkel method.
• $\mathrm{Zr}+2I_2\stackrel{\Delta }{\to }{\mathrm{ZrI}}_4{\mathrm{ZrI}}_4\stackrel{\Delta }{\to }\mathrm{Zr}+2I_2$